Granted Patent
Utility
US 5,947,862 · App. 08/973,886
Device for controlling the gear ratio of a continuously variable transmission
Inventors:
Thomas Knapp, Gerhard Eschrich, Wolfgang Runge
Patented Case
View Patent ↗
Granted: Sep 7, 1999
Filed: Dec 17, 1997
Inventors
Thomas Knapp
Gerhard Eschrich
Wolfgang Runge
Assignee (at issue)
ZF Friedrichshafen AG
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.